3Com Switch 7757, Configuration Manual

Page: 601 / 940

Interface Address Pool-Based DHCP Server Configuration 601
Enabling DHCP You need to enable DHCP before performing DHCP configurations. DHCP-related
configurations are valid only when DHCP is enabled.
Configuring to Assign
the IP Addresses of
Interface Address Pools
to DHCP Clients
If the DHCP server works in the interface address pool mode, it picks IP addresses
from the interface address pools and assigns them to the DHCP clients. If there is
no available IP address in the interface address pools, the DHCP server picks IP
addresses from its global address pool that contains the interface address pool
segment and assigns them to the DHCP clients.
Configuring to Assign IP
Addresses of DHCP
Address Pools to DHCP
Clients
You can assign IP addresses by static binding or assign IP addresses dynamically to
DHCP clients as needed.
Configuring to assign IP addresses by static binding
Some DHCP clients, such as WWW servers, need fixed IP addresses. This is
achieved by binding IP addresses to the MAC addresses of these DHCP clients.
When such a DHCP client applies for an IP address, the DHCP server finds the IP
address corresponding to the MAC address of the DHCP client, and then assigns
the IP address to the DHCP client.
Customize DHCP service Optional “Customizing
DHCP Service”
on page 605
Table 470 Interface address pool-based DHCP server configuration tasks
Configuration task Description Related section
Table 471 Enable DHCP
Operation Command Description
Enter system view system-view -
Enable DHCP dhcp enable Required
By default, DHCP is enabled
Table 472 Configure to assign the IP addresses of interface address pools to DHCP clients
Operation Command Description
Enter system view system-view -
Configure to assign
the IP addresses of
interface address
pools to DHCP clients Configure the
current interface interface interface-type
interface-number
Required
By default, a DHCP
server assigns the IP
addresses of the global
address pool to DHCP
clients
dhcp select interface
quit
Configure
multiple
interfaces in
system view dhcp select
interface
{ interface
interface-type
interface-number
[ to
interface-type
interface-number
] | all }
Table 473 Configure to assign IP addresses by static binding
Operation Command Description
Enter system view system-view -